What is Knob & Tube wiring? Knob and tube wiring is the original wiring method used from the late 1800’s until approximately 1945. It is a system that involved stringing individual conductor insulated wire across porcelain insulators called “knobs,” and through other porcelain insulators called “tubes.”
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What is Knob & Tube wiring? Knob and tube wiring is the original wiring method used from the late 1800’s until approximately 1945. It is a system that involved stringing individual conductor insulated wire across porcelain insulators called “knobs,” and through other porcelain insulators called “tubes.”
